Operation Manual Conductivity/Resisitivity 2-Channel Transmitter M300 Transmitter Cond/Res 2-Channel M300 52 121 318
Transmitter Cond/Res 2-Channel M300 © 05/07 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Printed in Switzerland Transmitter Cond/Res 2-Channel M300 52 121 318
Transmitter Cond/Res 2-Channel M300 Operation Manual Conductivity/Resisitivity 2-Channel Transmitter M300 © 05/07 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Printed in Switzerland Transmitter Cond/Res 2-Channel M300 52 121 318
Transmitter Cond/Res 2-Channel M300 Index 1 Introduction_ ___________________________________________________________________________________________ 7 2 Safety instructions_______________________________________________________________________________________ 7 2.1 Definition of equipment and documentation symbols and designations_________________________________________ 7 2.
Transmitter Cond/Res 2-Channel M300 8 Configuration__________________________________________________________________________________________ 28 8.1 Enter Configuration Mode___________________________________________________________________________ 28 8.2 Measurement_ ___________________________________________________________________________________ 28 8.2.1 Channel Setup____________________________________________________________________________ 29 8.2.
Transmitter Cond/Res 2-Channel M300 13 Maintenance___________________________________________________________________________________________ 57 13.1 For Technical Support______________________________________________________________________________ 57 13.2 Front Panel Cleaning_______________________________________________________________________________ 57 14 Troubleshooting________________________________________________________________________________________ 57 14.
Transmitter Cond/Res 2-Channel M300 1 Introduction Statement of Intended Use – The M300 Conductivity/Resistivity transmitter is a single- or dualchannel online process instrument for measuring conductivity or resistivity of fluids. It will interface with a variety of different Mettler-Toledo sensors, which connect to the transmitter using cables of varied lengths. A large four line backlit Liquid Crystal Display conveys measuring data and setup information.
Transmitter Cond/Res 2-Channel M300 The following is a list of general safety instructions and warnings. Failure to adhere to these instructions can result in damage to the equipment and/or personal injury to the operator. – The M300 Transmitter should be installed and operated only by personnel familiar with the transmitter and who are qualified for such work. – The M300 Transmitter must only be operated under the specified operating conditions (see section 16).
Transmitter Cond/Res 2-Channel M300 3 9 Unit overview M300 models are available in both a 1/ DIN and 1/2DIN case size. The 1/ DIN is a panelmount only design and the 1/2DIN models provides an integral P65 housing for wall-, or pipe-mount. 3.
Transmitter Cond/Res 2-Channel M300 3.
Transmitter Cond/Res 2-Channel M300 11 3.3 Control/Navigation Keys 3.3.1 Menu Structure Below is the structure of the M300 menu tree: 3.3.2 Navigation keys ESC Menu Cal Info Enter 3.3.2.1 Navigating the menu tree Enter the desired main Menu branch with the , or keys. Use the and keys to navigate through the selected Menu branch.
Transmitter Cond/Res 2-Channel M300 12 3.3.2.2 Escape Press the and key simultaneously (escape) to return to the Measurement mode. 3.3.2.3 Enter Use the ↵ key to confirm action or selections. 3.3.2.4 Menu Press the key to access the main Menu. 3.3.2.5 Calibration mode Press the key to enter Calibration Mode. 3.3.2.6 Info mode Press the key to enter Info Mode 3.3.
Transmitter Cond/Res 2-Channel M300 3.3.5 13 Navigation with ↑ in Display If a ↑ is displayed on the bottom right hand corner of the display, you can use the or the key to navigate to it. If you click [ENTER] you will navigate backwards through the menu (go back one screen). This can be a very useful option to move back up the menu tree without having to exit into the measuring mode and re-enter the menu. 3.3.
Transmitter Cond/Res 2-Channel M300 4 Installation instruction 4.1 Unpacking and inspection of equipment 14 Inspect the shipping container. If it is damaged, contact the shipper immediately for instructions. Do not discard the box. If there is no apparent damage, unpack the container. Be sure all items shown on the packing list are present. If items are missing, notify Mettler-Toledo immediately 4.1.
Transmitter Cond/Res 2-Channel M300 15 4.1.2 – – – – – – – – Installation procedure – 1/4DIN models Make cutout in panel (see dimensions cutout drawing). Be sure surface surrounding cutout is clean, smooth and free of burrs. Slide face gasket (supplied with transmitter) around transmitter from the back of the unit. Place transmitter into cutout hole. Be sure there are no gaps between the transmitter and panel surface.
Transmitter Cond/Res 2-Channel M300 4.1.3 16 Panel cutout dimensional information – 1/2DIN models 1/2DIN Model transmitters are designed with an integral rear cover for stand-alone wall mount installation. The unit may also be wall mounted using the integral rear cover. See installation instructions in Section 4.1.4. Below are cut-out dimensions required by the 1/2DIN models when mounted within a flat panel or on a flat enclosure door. This surface must be flat and smooth.
Transmitter Cond/Res 2-Channel M300 4.1.4 17 Installation procedure – 1/2DIN models For Wall Mount: – Remove rear cover from front housing. – Start by unscrewing the four screws located on the face of the transmitter, in each corner. This allows the front cover to swing away from the rear housing. – Remove the hinge-pin by squeezing the pin from each end. This allows the front housing to be removed from the rear housing – Drill out wall-mount breakthroughs in the rear housing.
Transmitter Cond/Res 2-Channel M300 4.2 18 Connection of power supply All connections to the transmitter are made on the rear panel of all models. Be sure power to all wires is turned off before proceeding with the installation. High voltage may be present on the input power wires and relay wires. A two-terminal connector on the rear panel of all M300 models is provided for power connection. All M300 models are designed to operate from a 20–30 VDC or a 100 to 240 VAC power source.
Transmitter Cond/Res 2-Channel M300 4.2.
Transmitter Cond/Res 2-Channel M300 20 4.3 Connector PIN definition 4.3.1 TB1 and TB2 for 1/2DIN and 1/4DIN versions *Dual-channel models only. NO = normally open (contact open if un-actuated). NC = normally closed (contact closed if un-actuated). 4.3.2 TB3 and TB4 for 1/2DIN and 1/4DIN versions TB3 is used for wiring Two & Four Electrode Conductivity Sensors (including Thornton 240-xxx, 243-xxx and 244-xxx Series).
Transmitter Cond/Res 2-Channel M300 21 5 Placing transmitter in, or out, of service 5.1 Placing transmitter in service After connecting the transmitter to power supply circuit, it will be active as soon as the circuit is powered. 5.2 Placing transmitter out of service First disconnect the unit from the main power source, then disconnect all remaining electrical connections. Remove the unit from the wall/panel.
Transmitter Cond/Res 2-Channel M300 6.2 22 Calibration Constant Entry Enter the calibration constants from the sensor label or certificate. Conductivity cell constants are primary ‘p’. For 2-electrode sensors, leave A = 0.0000. Temperature constants are secondary ‘s’. When configuring dual channel transmitters pressing [ENTER] will access sensor channel ‘B’ calibration constants. Press [ENTER] again to continue. 6.
Transmitter Cond/Res 2-Channel M300 6.5 23 Setpoint After configuring the Analog Output, a Setpoint can be configured for that measurement. If No is selected and [ENTER] is pressed then the quick setup is done and the menus are exited without setting up any Setpoint.
Transmitter Cond/Res 2-Channel M300 7 24 Sensor Calibration (PATH: Cal) The calibration key allows the user one-touch access to sensor calibration and verification features. When performing calibration on a conductivity or resistivity sensor, results will vary depending on the methods, calibration apparatus and/or quality of reference standards used to perform the calibration. 7.1 Enter Calibration Mode While in Measurement mode press the key.
Transmitter Cond/Res 2-Channel M300 7.2.1 25 One-point Sensor Calibration (Display reflects typical Conductivity Sensor calibration) Select 1 point Calibration by pressing the or key followed by the [ENTER] key. Enter the Value of calibration Point 1 and then press the [ENTER] key to start calibration. The value in the 2nd text line is the actual measured value from the sensor prior to calibration.
Transmitter Cond/Res 2-Channel M300 7.3.1 26 One-Point Sensor Temperature Calibration See 7.3 on how to enter the Temperature Calibration menu. Slope or Offset can be selected with the 1 point calibration. Select Slope to recalculate the Slope factor M (Multiplier) or Offset to recalculate the offset calibration factor A (Adder). Enter the value for Point 1 and press [ENTER]. The newly calculated value – either M or A – is displayed.
Transmitter Cond/Res 2-Channel M300 7.4 27 Edit Sensor Calibration Constants Enter Calibration mode as described in section 7.1 and select Edit. All calibration constants of the primary measurement (p) for the sensor are displayed on Line 3. All calibration constants of the secondary measurement (s) for the sensor are displayed on Line 4. For conductivity and resistivity sensors, the (p) primary measurement is conductivity or resistivity and the (s) secondary measurement is temperature.
Transmitter Cond/Res 2-Channel M300 8 28 Configuration (PATH: Menu/Configure) 8.1 Enter Configuration Mode While in Measurement mode, press the key. Press the or key to navigate to the Configure – Menu. After selecting the Configure – Menu and press [ENTER]. Enter the configuration security code “xxxxx” if required (see section 9.3). Press the [ENTER] key to confirm the code. C Note: to exit Configuration mode at any time press the and key simultaneously (ESC).
Transmitter Cond/Res 2-Channel M300 8.2.1 29 Channel Setup Press the [ENTER] key to select the ‘Channel Setup’ Menu. Select Sensor Type (2- or 4-electrode) and press [ENTER]. The 4 lines of the display can now be configured with measurements. Pressing the [ENTER] key will display the selection for lines c and d. Pressing the [ENTER] key again will bring up the Save Changes dialog. Dual channel transmitters also require selecting a channel ‘A’ or ‘B’ for each line of the display.
Transmitter Cond/Res 2-Channel M300 8.2.3 30 Temperature Compensation (for Mettler Toledo Thornton M300 only) Press [ENTER] to select this Menu. The temperature compensation mode for any of the four measurement lines can be selected. Temperature compensation should be matched to the characteristics of the application. Choices are ‘None’, ‘Standard’, ‘Light 84’, ‘Std 75ºC’, ‘Linear’, ‘Glycol.5’, ‘Glycol1’, ‘Cation’, ‘Alcohol’, and ‘Ammonia’. Press [ENTER] and save changes.
Transmitter Cond/Res 2-Channel M300 8.2.4 31 Set Averaging Press the [ENTER] key to select this Menu. The averaging method (noise filter) for each measurement line can now be selected.
Transmitter Cond/Res 2-Channel M300 32 If Auto-range was selected then Aout max1 can be configured. Aout max1 is the maximum value for the first range on Auto-Range. The maximum value for the second range on AutoRange was set in the previous menu. If Logarithmic Range was selected, it will also prompt for the number of decades as ‘Aout1 # of Decades =2’. The value for the Hold mode can be configured to hold the last value or can be set to a Fixed value.
Transmitter Cond/Res 2-Channel M300 8.4 33 Setpoints (PATH: Menu/Configure/Setpoints) Enter configuration mode as described in Section 8.2. Press the [ENTER] key to select this Menu. Up to 4 Setpoints on a single channel transmitter and 6 on dual channel transmitters can be configured on any of the measurements (a thru d). If configuring a setpoint for a measurement displaying conductivity, the possible types are Off, High, Low, Outside and Between.
Transmitter Cond/Res 2-Channel M300 34 Table 8.1: USP Section <645> Stage 1, EP WFI (Water for Injection), and EP Highly Purified Water Conductivity Limits as a Function of Temperature Temperature (ºC) 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Conductivity Limit (µS/cm) 0.6 0.8 0.9 1.0 1.1 1.3 1.4 1.5 1.7 1.8 1.9 2.1 2.2 2.4 2.5 2.7 2.7 2.7 2.7 2.9 3.1 Table 8.
Transmitter Cond/Res 2-Channel M300 35 Enter the desired value(s) for the Setpoint and press [ENTER] This screen provides the option to configure a setpoint to be active on an over range condition. Select the setpoint (1 thru 4) and ‘Yes’ or ‘No’. Select the desired relay that will activate when the setpoint alarm condition is reached. Over Range Configure whether an over range should also be alarmed and which relay should be used.
Transmitter Cond/Res 2-Channel M300 8.5 36 Alarm/Clean (PATH: Menu/Configure/Alarm/Clean) Enter configuration mode as described in Section 8.2. This Menu allows the configuration of Alarm and Clean functionality. 8.5.1 Alarm To select ‘Setup Alarm’, press the or key so that ‘Alarm’ is flashing. Using the and buttons, navigate to “Use Relay #”. Using the or keys, select relay (1, 2, 3 or 4) to be used for the Alarm and press [ENTER]. One of the following events may be alarmed: 1.
Transmitter Cond/Res 2-Channel M300 8.5.2 37 Clean Configure the Relay to be used for the cleaning cycle. The Cleaning Interval can be set from 0.000 to 999.9 hours. Setting it to 0 turns the clean cycle off. The cleaning time can be 0 to 9999 seconds and must be smaller than the Cleaning Interval. Select the desired Relay state: Normal or Inverted. Pressing the [ENTER] key again will bring up the Save Changes dialog.
Transmitter Cond/Res 2-Channel M300 8.6.2 38 Resolution This menu allows the setting of the resolution of each displayed value. Possible settings are 1, 0.1, 0.01, 0.001 or Auto. Pressing the [ENTER] key Will bring up the Save Changes dialog. 8.6.3 Backlight This Menu allows the setting of the back light options of the display. Possible settings are On, On 50% or Auto Off 50%. If Auto Off 50% is selected then the backlight will go to 50% after 4 minutes with no keypad activity.
Transmitter Cond/Res 2-Channel M300 8.7 39 Hold Analog Outputs (PATH: Menu/Configure/Hold Outputs) Enter configuration mode as described in Section 8.2. The Digital Input used to remotely control the Hold function is configured with this Menu. Initiating a hold condition will maintain the analog signal output and relay status at the value/ state at the time the Hold is initiated, for as long as the Hold state is maintained.
Transmitter Cond/Res 2-Channel M300 40 9 System (PATH: Menu/System) While in Measurement mode press the key. Press the or key to navigate to ‘System’ – Menu and press [ENTER]. Enter the security code ‘xxxxx’ if necessary (see section 9.3) and press [ENTER] to confirm the code. Refer to section 3.3.2 for information on use of the navigation keys. 9.1 Set Language (PATH: Menu/System/Set Language) This Menu allows the configuration of the Display language.
Transmitter Cond/Res 2-Channel M300 41 9.3 Passwords (PATH: Menu/System/Passwords) This Menu allows for the configuration of Operator and Administrator Passwords, as well as setting up a List of allowed Menus for the Operator. The Administrator has rights to access all Menus. All default passwords for new transmitters are ‘00000’. The Passwords Menu is protected: Enter the Administrator Password to enter the Menu. 9.3.
Transmitter Cond/Res 2-Channel M300 42 9.5 Reset (PATH: Menu/System/Reset) This Menu allows access to the following options: Reset System, Reset Meter Cal, Reset Analog Cal. 9.5.1 Reset System This Menu allows the reset of the meter to the factory default settings (Setpoints off, analog outputs off, etc.). The meter calibration and the analog output calibration are not affected. Pressing the [ENTER] key after the selection will bring up a confirmation screen.
Transmitter Cond/Res 2-Channel M300 43 10 PID Setup (PATH: Menu/PID Setup) PID control is proportional, integral and derivative control action that can provide smooth regu lation of a process. Before configuring the transmitter, the following process characteristics must be identified.
Transmitter Cond/Res 2-Channel M300 44 Controller with Corner Points Proportional limit +100% value 120% 100% 80% 60% Direct corner point (value, %) YP Error (%) 40% Set point value 20% Deadband + value 0% Deadband - value -20% Reverse corner point (value, %) -40% -60% -80% -100% Proportional limit -100% value -120% 0 100 200 300 400 500 600 700 Conductivity (µS/cm) 10.1 Enter PID Setup While in Measurement mode press the key.
Transmitter Cond/Res 2-Channel M300 45 10.3 Mode (PATH: MENU/PID Setup/Mode) This menu contains the selection of control modes using relays or analog outputs. Press [ENTER]. 10.3.1 PID Mode This menu assigns a relay or analog output for PID control action as well as details of their operation. Based on the control device being used, select one of the following three paragraphs for use with solenoid valve, pulse input metering pump or analog control.
Transmitter Cond/Res 2-Channel M300 46 10.4.1 PID Assignment & Tuning Assign the measurement, a, b, c, or d to be controlled after “PID on_”. Set the Gain (unitless), Integral or Reset time Tr (minutes) and Rate or Derivative time Td (minutes) needed for control. Press [ENTER]. Gain, Reset and Rate are later adjusted by trial and error based on process response. 10.4.
Transmitter Cond/Res 2-Channel M300 47 11 Service (PATH: Menu/Service) While in Measurement mode press the key. Press the or key to navigate to the ‘Service’ and press [ENTER]. Enter the security code “xxxxx” if required (See section 3.1) and press [ENTER] to confirm the code. The available system configuration options are detailed below C NOTE: to exit Service mode at any time press the and key simultaneously (escape).
Transmitter Cond/Res 2-Channel M300 48 11.1.2 Digital Input The digital Input menu shows the state of the digital input. Press [ENTER] to exit from this display. 11.1.3 Display All pixels of the display will be lit for 15 seconds to allow troubleshooting of the display. After 15 seconds the transmitter will return to the normal Measuring mode or press [ENTER] to exit sooner. 11.1.4 Keypad For keypad diagnostics, the display will indicate which key is pressed.
Transmitter Cond/Res 2-Channel M300 49 11.1.5 Memory If Memory is selected then the transmitter will perform a RAM and ROM memory test. Test patterns will be written to and read from all RAM memory locations. The ROM checksum will be recalculated and compared to the value stored in the ROM. 11.1.6 Set Relay The Set Relays diagnostic menu allows for the activation/deactivation of each Relay. To access relays 5 and 6 on dual channel transmitters, press [ENTER].
Transmitter Cond/Res 2-Channel M300 50 11.1.8 Set Analog Outputs This menu enables the user to set all analog outputs to any mA value within the 0–22 mA range. 11.1.9 Read Analog Outputs This menu shows the mA value of the analog Outputs. Press [ENTER] to exit from this display.
Transmitter Cond/Res 2-Channel M300 11.2 51 Calibrate (PATH: Menu/Service/Calibrate) This menu has the options to calibrate the transmitter and the analog outputs and also allows the unlocking of calibration functionality. 11.2.1 Calibrate Meter The M300 transmitter is factory calibrated within specifications. It is not normally necessary to perform meter re-calibration unless extreme conditions cause an out of spec operation shown by Calibration Verification.
Transmitter Cond/Res 2-Channel M300 52 When Calibrate Meter is selected, the display will show Channel A and Resistance 1, designating that the transmitter is ready to calibrate the first range resistor on channel A. This resistance may be changed, selecting range 1 thru 5, or temperature. Each resistance range consists of a two-point calibration.
Transmitter Cond/Res 2-Channel M300 53 Press [ENTER] and the transmitter will ask to ‘Save Calibration’. Select Yes to save the calibration values and the successful Calibration is confirmed on the display. The transmitter will return to the operation mode in approximately 5 seconds. The above calibration process can then be repeated for Channel B of dual channel transmitters. 11.2.2 Calibrate Analog Select the Analog Output you wish to calibrate. Each Analog output can be calibrated at 4 and 20 mA.
Transmitter Cond/Res 2-Channel M300 54 11.2.3 Calibrate Unlock Select this Menu to configure the CAL Menu, see Section 7. Selecting Yes means that Meter and Analog Output calibration Menus will be selectable under the CAL Menu. Selecting No means that only the Sensor calibration is available under the CAL Menu. Press [ENTER] after the selection to display a confirmation screen. 11.3 Tech Service (PATH: Menu/Tech Service) C Note: This Menu is for Mettler Toledo Service personnel use only.
Transmitter Cond/Res 2-Channel M300 12 55 Info (PATH: Info) Pressing the key will display the Info Menu with the options Messages, Calibration Data and Model/Software Revision. 12.1 Messages (PATH: Info/Messages) The most recent message is displayed. The up and down arrow keys allow scrolling through the last four messages that have occurred. Clear Messages clears all the messages. Messages are added to the message list when the condition that generates the message first occurs.
Transmitter Cond/Res 2-Channel M300 12.2 56 Calibration Data (PATH: Info/Calibration Data) Selecting Calibration Data displays the slope (M) and offset calibration constants (A). Use the up and down arrow keys to toggle between channels ‘A’ and ‘B’ on dual channel transmitters. P = calibration constants for the primary measurement S = calibration constants for the primary measurement Press [ENTER] to exit from this display. 12.
Transmitter Cond/Res 2-Channel M300 13 Maintenance 13.1 For Technical Support 57 For technical support and product information for M300 Thornton Transmitters contact: Mettler-Toledo Thornton, Inc. 36 Middlesex Turnpike Bedford, MA 01730 Phone: 781-301-8600 or 800-510-PURE Fax: 781-271-0214 Email: service@thorntoninc.com Or: Your local Mettler-Toledo Sales Office or representative 13.2 Front Panel Cleaning Clean the front panel with a damp soft cloth (water only, no solvents).
Transmitter Cond/Res 2-Channel M300 14.1 58 Changing the Fuse Make sure that the mains cable is unplugged before changing the fuse. This operation should only be carried out by personnel familiar with the transmitter and who are qualified for such work. If the power consumption of the M300 transmitter is too high or a manipulation leads to a short circuit the fuse will blow. In this case remove the fuse and replace it with one specified in Chapter 16.
Transmitter Cond/Res 2-Channel M300 16 Specifications 16.1 General specifications Conductivity/resistivity ranges 0.01 cm–1 constant sensor 0.1 cm–1 constant sensor 10 cm–1 constant sensor 4-electrode sensor Chemical concentration curves TDS range (CaCO3 and NaCl) Temperature input Temperature measuring range Sensor maximum distance 59 0.002 to 200 µS/cm (5000Ω x cm to 500 MΩ x cm) 0.02 to 2000 µS/cm (500Ω x cm to 50 MΩ x cm) 10 to 40,000 µS/cm (25Ω x cm to 100 KΩ x cm) 0.01 to 650 mS/cm (1.
Transmitter Cond/Res 2-Channel M300 16.3 60 Mechanical specifications for 1/4DIN version Dimensions (housing – H x W x D)* Front bezel – (H x W) Max. depth Weight Material Ingress rating 96 x 96 x 140 mm (1/4DIN model) 102 x 102 mm 125 mm (excludes plug-in connectors) 0.6 kg (1.5 lb) ABS/polycarbonate IP 65 (front)/IP 20 (housing) * H=Height, W=Width, D=Depth 16.4 Mechanical specifications for 1/2DIN version Dimensions (housing – L x H x W)* Front bezel – H x W Max.
Transmitter Cond/Res 2-Channel M300 17 61 Default tables Alarm Clean Language Passwords All Relays (unless otherwise specified) Lockout Channel A Channel B (Dual Channel) Cal constants Analog Out All analog out Conductivity/Resistivity Temperature Set point 1 Relay 3 Set point 2 Relay 4 Resolution © 05/07 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Printed in Switzerland Relay Diagnostics Power Failure Software Failure Delay Hysteresis State Relay Hold Mode Interval Clean Time State
Transmitter Cond/Res 2-Channel M300 18 62 Waranty METTLER TOLEDO warrants this product to be free from significant deviations in material and workmanship for a period of one year from the date of purchase. If repair is necessary and not the result of abuse or misuse within the warranty period, please return by freight pre-paid and amendment will be made without any charge. METTLER TOLEDO‘s Customer Service Dept. will determine if the product problem is due to deviations or customer abuse.
Transmitter Cond/Res 2-Channel M300 63 Notes: © 05/07 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Printed in Switzerland Transmitter Cond/Res 2-Channel M300 52 121 318
Transmitter Cond/Res 2-Channel M300 64 Addresses © 05/07 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Printed in Switzerland Transmitter Cond/Res 2-Channel M300 52 121 318
